Cutting the antenna cable?

Guys,

I have a mighty mouse II and the cable is way too long. I always
thought not to cut the cable but am wondering why not?

Is it beacuse its impossible to get it back together proberly? or is
the length important for the antenna to work properly?

Matt

web1000@shaw.ca wrote in news:1113793590.370886.294040
@o13g2000cwo.googlegroups.com:

Hi Matt,

It's no problenm to shorten the cable if you can mount a new connector.
You might run into one problem: the MM2 is quite powerful. If you shorten
the cable, you reduce the cable attnuation (by 1.4 dB/meter). With too
much gain you might overload your receiver. Small chance however.

Sam

1.4dB per meter ? Boy that's one bad cable that MM2 has. Must be made of a
bunch of resistors soldered end to end. Hard to believe it works so well at
1.4 dB/meter.

Note to original poster: shorten your cable as much as you want. No GPS
receiver is going to be overloaded by using a shorter antenna cable. Just
obviously make a good connector termination on it.

a
at

RG-174 (the thin coax) has a loss of 110db/100m at 1300 MHz and 175db/100m
at 2300 MHz, so the figure at 1550MHz will indeed be about 140-150dB/100m.

That's why all those external antennas need an internal amplifier.. RG-213
would have been much better, but at 10mm dia. a bit unpractical :-)

Meindert

web1000@shaw.ca wrote:

Suggest just coiling up the unneeded length... that way you don't
have to fiddle with gain/attenuation changes, impedance mismatches,
and you preserve the length should you need it in a new situation
into the future.